R. Agrawal, и R. Srikant. VLDB '94: Proceedings of the 20th International Conference on Very Large Data Bases, стр. 487--499. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (1994)
C. Giuliano, A. Lavelli, и L. Romano. Proceedings of the 11th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2006), Trento, Italy, (03-07 April 2006)
F. Suchanek, G. Ifrim, и G. Weikum. Proceedings of the 2nd Workshop on Ontology Learning and Population: Bridging the Gap between Text and Knowledge, стр. 18--25. Sydney, Australia, Association for Computational Linguistics, (июля 2006)